How to set a mark at one face of the mesh?

[vcxiaohan]

Thanks for your help. I studied the example, and I need to achieve the rotate of the mesh and the decals without using OrbitControls, and something went wrong. I ask another question as below:

When rotate the object, and then put the DecalGeometry is wrong?

I copy the official decals example and change it by myself, I create an object add the mesh and the decals, and when the object rotate, I find the decals is not right? [image] I write the jsfiddle demo, you can click the button change rotate status.